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Dong Xie

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#artificial intelligence Preprint Sep 2026

Causal Retention in Interactive Agents: Interface Factorization and Selective Adaptation

This work studies causal retention: whether a frozen learned state answers a mechanism-probe map fixed independently of training, including action, context, direct target, value, and delay, which is distinct from task sufficiency and source-domain decodability.

Sheng-Jun Zhang, Ting Liu, Dong Xie et al. · 0 citations
#machine learning Preprint Sep 2026

ZO-COSMO: Index-Free One-Hop Mixing for Decentralized Zeroth-Order Optimization

Sparse communication in decentralized zeroth-order learning requires compatible peer-state coordinates. We characterize this one-hop condition and develop \textsf{ZO-COSMO}, coupling two-query estimation with average-preserving masked consensus using $q$ values per active link. Global supports serve all-neighbor mixing...

Sheng-Jun Zhang, Ting Liu, Heng Zhang et al. · 0 citations

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